Stirrup adjuster



FIG. 1 is a front elevational view of my stirrup adjuster showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is an end elevational view of the right end thereof. 

The ornamental design for a stirrup adjuster, as shown and described. 